QUESTION 5 A windmill-style softball pitcher executes a pitch in 0.5s. If her pitching arm is 1m long, what is the magnitude of the radial acceleration on the ball just before the ball release, when tangential ball speed is 20 m/s?
 100 m/s2 200 m/s2 300 m/s2 400 m/2 


 QUESTION 6 A windmill-style softball pitcher executes a pitch in 0.5s. If her pitching arm is 1m long, what is the magnitude of the total acceleration on the ball just before the ball release, when tangential ball speed is 20 m/s?
 401.9 m/s2 378.9 m/s2 289 m/s2 479 m/s2

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Centripetal Force

A particle, body, object or certain mass while travelling in a rotational path or semicircular path, experiences an inertia force. If that inertia force pulls the towards the inward of the imaginary circle in the rotation, it is termed as centripetal force.